

On Mar 22, 2013, at 4:04, Erin Hodgess <erinm.hodgess@gmail.com> wrote:

> Dear R People:
> 
> I am trying to replicate a cool example that I saw on the R-bloggers some
> time ago by kafka399.
> 
> Here are the lines tI think may be  causing the trouble:
> 
> gray_file <- read.pnm(path)
> 
> pos[i,] <- c(gray_file@grey)

Hi Erin, 

This is basically impossible to debug as is -- though I do note you spell that color between white and black inconsistently; could you please put some effort into making a true reproducible example or, at the very least, linking to the project you are attempting to replicate?

Michael

 http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example



> 
> The warning error that I get is
> "In rep(cellres, length=2): x is NULL so the result will be NULL
> 
> Any suggestions would be much appreciated.
> 
> Thanks,
> Sincerely,
> Erin
> 
> 
> 
> 
> 
> -- 
> Erin Hodgess
> Associate Professor
> Department of Computer and Mathematical Sciences
> University of Houston - Downtown
> mailto: erinm.hodgess@gmail.com
> 
>    [[alternative HTML version deleted]]
> 
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

	[[alternative HTML version deleted]]

